Angle-cock device



Feb. 24, 1931. cc, FARMER 1,793,600

ANGLE COCK DEVICE Filed Nov. 24, 1928 INVENTOR CLYDE C. FARME'R ATTORNEY l Patented Feb. 24, 1931' CLYDE c; re imen;- onlrrrrsnuserr, PENNSYLVANIA, nssreivon o 'wnsrinebrakes and more particularly to-an angle an angleicock device having a gate valve which is operated-by pneumatic means re-' sponsive to the actuation of a manually controlled pressureregulating valve.

HOUSE AIR BRAKECOMPANY, OF WILM OF PENNSYLVANIA ERDING, PENNSYLVANIA, A CORPORATION ANGLE-COCK DEVICE ,7 Application filed November 24, Serial No. 321,543.

This invention relates {to fluid Y pressure cock device such as employed to control com munication through the brake pipe of a fluid pressure brake 7 system.

. in object of the invention is toprovide Anotherobject of the invention is to pro I vide an angle cock device which is relatively act in function'under all conditions of servand 19 being separated by a diaphragm 21, while the chambers19 and '20 are separated simple in construction, and reliable and, ex-

ice.

The invention also comprises certainnew and useful improvements in the construction, arrangement and combination of the several parts of which it is composed, as

will be hereinafter more fully. described and,

claimed.

In the accompanying drawing, the single .figure is a diagrammatic sectional view of an angle cock deviceembodying the ,lHVGIIe tion. c. 7

Referring to the drawing, the angle cock device may comprise a casingl. containing a gate valve .2 adapted to'be operated, in a mannerto be described, to close a conduit 3 extending through the casing from the brake pipe end 4 thereof. 1

A seat 6 is formed in the casing for the valve 2. As shown, the lower end of, the

to the flexible hose end 5 valve may be provided with an inclined face 7 to provide a wedge-shaped nose, and the seat 6 may befalso correspondingly formed,

mro

,as'at. 8. In this way a better seal can be had to prevent the passage of fluid through the conduit?) when the valve is seated.

For the purpose of actuating the valve, I

'- prefer to employ a differential piston com- T rising heads 9 and 10carried by the stem l1 ofthe valve. Thepiston 9 is mounted in V a cylinder 12 while the piston 10 is mounted lj in a cylinder 13. Each piston, 9 and'lQ is j provided with a cup-shaped packing ring 7 .14 for preventing leakage of the fluid under ressure. in the cylinders past vthe pistons I d fertile valves 28 f 'and' 29. respectively.

urine the rse e Qt wa rs-J j communicated tothe othen.

The -valve 2 1 is retained." normally raised position bya spring lmountedin the cylinder 12 and bearing against one face of thepiston 9,.the other end ofthe spring encircling an annular boss 16 formed in the bottom'of the cylinder 12. j I v Thecylinder 13 has a vent -17to:the atmosphere, which vent is preferably formed adjacent to the bottom ofthe cylinder. so as 1 to relieve pressure against the face ofthe piston during the'downward movement of the valve 2. p j v v The casing is provided with juxtaposed chambers 18, 19 and 20, the chambers 18 by a diaphragm22. V 1 The chamber 18 is connected to the portlon ofthe conduit 3 adjacent to the hose end 5 by a passage 23 having a restricted portion The 'pas- 2 1 therein to" provided a choke. I sage 23 is also connected to the chamberf19 by a port 25 having a restricted portion 26 therein to provide a choke. The chamber 20 'tobe manually actuated, it is formed with a fluted stem 34 which projects through the port30.j A. follov'ver plate 35 is disposed within the chamber 18, being pressed againstthe diaphragm 21 by an expansible coil spring 36.

A double headed follower 37 is disposed in the chamber-19, one head. of this follower bearing against the diaphragm 21, while its other head bears against the diaphragm 22,

so that movement of one diaphragm will be Double beat valves 28 and 29 in a chan1ber38. Thevalive 28'has a fluted stem 39 mounted in an opening 40 formed in the'casing between the chambers 20 and 38. Thejvalvie 29 base flutedstem 41 mounted in anopeninge2. "1 heopposite end walls of the chamber 38 are formed with seatsil3 and are disposed and presses the end of thevalve stem 39 2 against the diaphragm 22, so that the double beat valves will be operated by thediap g p y The construction is such that when the valve 28 is unseated the valve 29 is seated to Icl'osethe o'penin'g42, and vice versa wh'e'nthe valve 29 is unseated the valve28is seated'to close the opening 40, V

The opening 42 is connected to th'e" brake pipe end 4' of the conduit 3 by a passage 46, which passage is also connected to the chamber 19 by a branchipassage47.

The chamberf 38, is connected to a chamber Normall the-cylinder 12 will be charged with fluid j under pressure from'the conduit 3pa'ss'ing upwardly through the valveseat 6. The fluid charge in the brakepipe pressure, the stem 34' of valve 32 on the' 'two adjacent cars is depressed, thereby venting the chamber 18;

' under pressure trom'the conduit 3 also flows through the passages23,fl46 and 47 into the chambers 18 and'1 9, and acting on, the opposite sides of the" diaphragms'21 and 22 re spectively, permits the spring 36 to seat the valve 29, as shown.

- With the parts so positioned, the chamber 48 is ventedto the atmospherethrough passage'49, chamber 38, passage .40, chambered and vent 27. r

When it is desired to disconnectadj oining cars fitted with, the improved anglecocks Without causing an emergency rate of dis- The fluid pressure in this chamber then reduces fasterthan it can'b'e built up by the flow through the passage .23 from thebrake pipe, and the pressure in the chamber 19 flexes the diaphragm 21' outwardly thereby re1-iev'-' movement of the piston 9.

1 e sev ieese an; the-eti- Being uncoupled catiing the pressure of the diaphragm 22 on the end of the stem 39, which permits the spring 45 to force thestem 4lforwardly unseating" the valve 29 and seating the valve 28.5 g

The vent tochamber 38 is thus closed and the fluid pressure from the brake pipe enterj ing this chamber from the passages 46v and 42:

flows downwardly through the passage 49 '.into the chamber 48. AS. the fl'u'id pressure in chamber builds up, the differential, l l'te jHi'-a piston is forced downwardly and this action carries the valve 2 onto the seat The spring'15'is compressed by the downward Afterthe wav 2 is seated an the flew off anaemia thebrakejpipe through the conduit 3,:to the hoseis thereby cutoff, it is then 'iiec'.

ssay felidld. only lone vane "32 been. The

t sliglit' flow of the y, when the valve V open 7 stop the low entirelyya jdummy coupling can i be applied to'the hose end 5, after which the valve 2 will open. It will be further noted that the valve 2'iwill be raised, thereby per mitti'nfg unrestricted flow of the flui-dthrough the conduit 3 when'th'e valve 32 is seated, and the valve 2 will remain raised until the valve 32 is unseated, which action causes the fluid -ir'e'ss'ure' to build up in the chamber 48 an amount suflicient to force the difierential p V 7 piston downwardly against'the pressureof 48 ih'th'ftop of the cylinder 13 by a passage:

the spring 15.

I Whencars are coupled together an emeren'c'y rate of discharge can be transmitted through the brake pipes. without. causing an imdesiredclosing of the valves 2 by reason of the fact that the pressure of spring15 against raised. g M v Nhile'one illustrative embodiment of the the piston Qwill retain-the valve 2 invention 'ha s'been: described in detail, it is p n'ot myfintention to limit itsscope to that embodiment or otherwise the terms of the appended claims.

, Having now described myinvention, what Icla'im" as newand'de'sire to secure Letters Patent, i's:j-v v v 1. An angle cock device comprising-a casing having a conduit therethrough, a normal- "l'y open valve for controlling the flow of fluid through the conduit, means for seating the valve by flu d pressure, and means for convalve by fluid pressure, a double beat valvefor controllingthe flowoffluid to said pressure trolling the flow of fluid to said fluid pressure v means, and means for actuating the double beat valve by fluid pressure.

ingfhavi'ng aco'nduit therethrou h,a normally-cpen valve for controlling the flow of fluid through the 'c'ond'i'iihineans for seating the I o'f'fiuid to said presns, a diap'hiag m for actuatingthe double valve, and arcanefor co'i'iftrolling the fluid ipressui against the diaphragm.

en angle cock d vice com} isin'g- :1 casni 'having aconduit therethioug-h, a normally open gate valve forcontro'lling tlie flow of ii'iountedin tIie c'y irider for actuating the rmaine the 'ljyspo pressure aid ub'le' beat valveu'i't, acylinder, a piston v An angle cock device comprising :1 casass s esta the valve a'i-id fthe piston mounted in the cylinder for actuating the valve, and means for controlling the fluid 7 pressure on one side of thepiston including g Y a by-pass having a double beat valve.

' piston mounted in the cylinder for actuating 6. An angle cock device comprising a cas-' mg having a conduit therethrough, a normal ly open gate valve for controlling the flow of fluid through the conduit, a cylinder, a

c the valve, a by-pass around the valve and the cylinder, a double beatvalve for controlling the flow of fluid through the by-pass, a passage connecting the by-pass and the cylinder on one side of the piston, said passage being ating the double beat valve.

opened or closed by the double beat valve, and means for manually and pneumatically actu- 7., An angle cock device comprising a casing having a conduit therethrough, and a differential piston operated gate valve forcontrolling the flow of fluid through the conduit.

8. An anglecock device comprising-a'casing having a conduit therethrough, a valve 1 for controlling the flow of fluid through the conduit, and a difierential atmg the valve. p

9. An angle cock device comprising a caspistoni for opering having a conduit therethrough, a gate valve for controlling the flow of fluid through the conduit, means for actuating the valve including a fluid pressure operated piston,

a double heat valve for controlling the fiow.

of fluid to the piston operating means,and manual andpneumat c means for actuating the double beat valve.

10. An angle cock device comprising a cas- 'ing having a conduit therethrough, a gate valve for controlling the flow of fluid through v the conduitymeans for actuating the valve including a fluid pressure operated piston, a double heat valve for controlling the flow of fluid to the piston operating means, and manual and pneumatic means for actuating the double beat valve, said pneumatic means being responsive to the actuation of the said manual means.

11. An angle cock device comprising a casing having a conduit therethro-ugh, a gate valve for. controlling the flow of fluid through the conduit, a dilierential piston connected to the valve, a by-pass communicating Withthe conduiton each side of the valve, and

means responsive to the pressure of fluid in the by-pass for actuating the said piston.

In testimony whereof I have hereunto set my hand, this 22nd day of November, 1928. v

V CLYDE C. FARMER. 

